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US 2006/0220666 A1Published application
Microcontactor probe assembly
AssigneeNHK Spring Co., Ltd.
InventorToshio Kazama
Life of this patent
Estimating the term…
Abstract
In order for a conduction path to have a reduced number of sliding portions for conduction, without increase in inductance nor resistance, thereby permitting an enhanced accuracy of inspection, a pair of plungers (3, 4) biased in opposite directions by a coil spring (2), to be electrically connected to a wiring plate (10), have electrical connections in which, in a tubular portion (15) as a tight wound spiral portion (15a) fixed on one plunger (4) to allow linear flow of electrical signal, the other plunger (3) is brought into slidable contact.
Claims13
A microcontactor probe comprising:
- an insulator formed with a support hole having an open end and a close end;
- a lead conductor exposed inside the support hole at the close end;
- and
- a resilient conductive assembly fitted in the support hole and kept from falling, the assembly comprising:
- a first plunger exposed outside at the open end;
- a second plunger contacting the lead conductor;
- a tubular conductor portion on one of the first and second plungers, and
- a stem part of the other one of the first and second plungers, at least a portion of the stem part establishing a substantially concentric relationship with the tubular conductor portion at least during a probe operation, the concentric relationship of the tubular conductor portion with the stem part minimizing resistance and induction during a probe operation;
5 more elements
A microcontactor probe comprising:
- an insulator formed with a support hole having an open end and a close end;
- a lead conductor exposed inside the support hole at the close end;
- and
- a resilient conductive assembly fitted in the support hole and kept from falling, the assembly comprising:
- a first plunger exposed outside at the open end;
- a second plunger contacting the lead conductor;
- and
- a stem part of the other one of the first and second plungers, at least a portion of the stem part establishing a substantially concentric relationship with the tubular conductor portion at least during a probe operation, the concentric relationship of the tubular conductor portion with the stem part minimizing resistance and induction during a probe operation;
- a coil spring fitted on the first and second plungers, the coil spring including at least a portion of the coil spring which forms a conduction path configured to minimize resistance and induction during a probe operation.
6 more elements
Dependencies are inferred from the claim text.